It has been reported that bitter Old Firm rivals Rangers and Celtic are keen on signing Grbic from Clermont Foot in the summer transfer window.
However, according to the report, Brighton in the Premier League are also interested in securing the services of the 23-year-old striker this summer.
According to WhoScored, Grbic made 25 starts and one substitute appearance in Ligue 2 for Clermont Foot this season, scoring 17 goals in the process.
Pascal Gastien finished fifth in the Ligue 2 table this season with 50 points from 28 matches, just four points behind leaders Lorient.
The Premier League and the Scottish Premiership are suspended at the moment, while Ligue 1 and Ligue 2 has been called off due to the global health crisis.
It remains to be seen when the summer transfer window will open, and whether clubs will spend a lot of money on new players.